Tenon-machine gage.



A. R. RUMOHR.

TENON MACHINE GAGE.

APPLIGATION HLED JULY o, 1913.

1 ,082,048, Patented Dec. 23, 1913.

WITNESS INVENTO? coLUMnM PLANQGRAPM cu.. wASHlNuToN. uA c.

uANSON ROBERT RUMOHILOF VANCOUVER, BRITISH COLUMBI, CANADA.

TENON-MACHINE GAGE.

Specification of LettersPatent.

Patented Dec. 23a] 913.

Application filed July 9, 1913. Serial No. 778,182.

to gage the length of the tenen in the first cut at one end of the stockand in the second cut, on the opposite end of the stock, the

distance between the shoulders of the tenons, the gage stop beingdesigned to automatically fall of its Own accord to the positionrequired for the second cut, when the work is lifted to present theopposite end to the cutters.

The invention is particularly described in the following specification,reference being made to the drawings by which it is accompanied, inwhich:

Figure l is a sectional elevation of the gage with a piece of work in itpresented to the tenen cutting heads to cut the rst tenen. Fig. 2, asimilar view as required to cut the tenen on the other end, and Fig. 3is a cross section on the line 3 3 in Fig. 1.

In these drawings 2 represents the frame of the machine, 3 thetraversing carriage and l the bridge upon the upper side of which thestock 5 rests which it is desired to tenon. This bridge also supportsthe forward end of the gage stop bar G. The upper and lower cutter headsare represented by 8.

Slidably mounted in a dovetailed groove of the gage bar G is a basemember 7 having a set screw t) by which it may be secured in any desiredposition of lengthwise adjustment and lugs upwardly projecting from itto carry a fulcrum pin 10 on which is mounted a shoulder gage member 12having on its upper side a dovetailed groove extending lengthwise fromend to end, in which groove a tenen length gage member 13 is movable andmay be secured in any desired position of lengthwise adjustment by a setscrew 14. The after end of the member 12 from the pin 10 4is longer thanthe forward, so that when free it normally falls to the angularposition, as shown in Fig. 2, and projects its front end above the levelof the work seat.

In use, the shoulder ga e member is adjusted with the front en( of l2 ata distance from the cutter heads S to give the required distance betweenthe shoulders of the tenons, and the stop 13 is adjusted in its distancefrom the end of'12 to the required length of the tenen, or to divide thedifference between the length of the stock and the distance between thetenon shoulders. The work 5 to be tenoned is then placed upon theupperside of themember 12 with the end of it against the stop 13, as shown inFig. 1, and after the tenen has been cut on one end of the stock, it isreversed in its position. lVhen the stock 5 is lifted olf the end of thegage stop 12 to reverse the position of the stock, the unbalanced outerend of 12 will :t'all and will project the shoulder gage end of 12 abovethe level of the stock seat on the gage bar (i, and against thisupwardly projecting end the shoulder of the tenen, which has been cut,is placed, as shown in Fig. 2. The distance from the end of 12 has beenadjusted to the required distance between the tenen shoulders, so thatthe second tenon is cut to what is required.

'lhe gage is simple to Imimifacture and in its action and is not liableto derangement.

there found necessary, the width of the gage stops may be such as willenablel two pieces ofthe stock to be tenoned at one time.

Having now particularly described my in vention, and the manner of itsuse, I hereby declare that what I claim as new and desire to beprotected in by Letters Patent, is:

1. A tenen gage, comprising a base member slidably adjustable on thetable of the machine, a tenen shoulder stop pivotally mounted on thebase member and overhalaueed so that the end toward the tenen cutterswill when free project above the seat of the stoel: on the machinetable, and a tenon length stop adjustably mounted on the shoulder gagemember.

2. A tenon gage, comprising a base member slidably titl-ing a groove inthe gage bar and means for securing the same in any desir-ed position oflengthwise adjustment, a tenon shoulder stop pivotally mounted on thebase member the end of said stop projecting toward the cutters beyondthe corresponding end of the. base member, said shoulder stop beingover-balanced whereby to project the projecting end of the shoulder gagestop above the seat of the stock and a tenon end stop adjustably secured0n the shoulder gage stop.

3. A tenon gage stop, comprising a base member slidably fitting a groovein the gage bar and having means Jior securing it in any desiredposition of lengthwise adjustment therein, a tenori shoulder stop sopivotally mounted on the base member that the end toward the tenencutters will when free project above the seat of the stock on themachine said shoulder gage member lengthwise grooved, and a tenon endgage member slidably mounted on the shoulder gage member and havingprovision Jfor lengthwise adjustment thereon.

4. In combination with a table having a slot, of a tenon gage comprisinga base memresem/is ber mounted for movement in said slot, a lug on saidbase member, a tenon shoulder stop pivotally mounted on said lug andoverbalanced at one end to cause its other end to normally project abovethe seat of the stop on the machine table, said tenon shoulder stophaving a longitudinal groove, and a tenon end stop having a tongueslidably mounted in said longitudinal groove, means for securing saidtenon end stop in position, and means for securing said base member inposition.

In testimony whereof l afiX my signature in presence of two witnesses.

ANSON ROBERT RUMOHR. TWitnesses:

RowLAND BRITTAIN, MAY WHYTE.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C."

